You'll wear your shoes out. The traffic always gave more of an excuse to be on the "Strip" but the old Strip is pretty much gone. I agree with @VFL-82-JP use the AG and shuttle
I have parked up near Fort Sanders hospital for years and never have any issues. And I can usually get out pretty quickly after we walk back from the stadium, get a drink, etc. Not free, but not terribly expensive either. Will be over for Homecoming and plan to do the same thing.
We parked in one of the off-campus garages for a game last season. When we got back to the vehicle, we pulled out our chairs and had a few drinks/snacks while we waited for the garage to empty. I was in no hurry to get to the hotel and we avoided the stress of sitting in traffic.
Seems little high for UTSA game. But that same ticket will sell for $300 or more for the UGA, aTm, or USCjr game. G10 parking on game day will take a little bit to navigate traffic.